spirit summoning is all that can be done here. scrrying mirrors, religions and holidays that celebrate the dead. Intel orgs and mil psy ops detachments, 'congresses' and 'parliaments' openly practicing voodoo/ars goetia. Pharmakeia and medea too.
There is nothing else to be used to.
some here can see. You are not 'hidden'. The veil is not impermeable.